I don't know, but have you tried reading Fahrenheit 451, Animal Farm, Sherlock Holmes (I recommend starting with the first book but, whatever you want), Lord of the Flies, or maybe some more classics? If you're not the most advanced reader, try starting with Animal Farm or Sherlock Holmes, but, some of my favorites are Fahrenheit 451 or Lord of the Flies, and I've also tried reading a book called "Pride and Prejudice" you may have heard of it, but I couldn't get a hold of the plot and lost interest after a few chapters, try that one if you'd like to challenge both your vocabulary and comprehension.